Roof-contacted filling is an important way to achieve safe mining under seabed.Considering the properties of filling materials,filling technology,mining methods and ore-rock conditions based on the analysis of the influencing factors,a multi-level model was established by use of Analytic Hierarchy Process(AHP),and a judgment matrix was constructed to determine the relative importance of the influencing factors.The factors influencing roof-contacted filling for mining under seabed in Sanshandao gold mine were analyzed and evaluated.The results showed that the properties of filling materials,filling pressure and the blasting technology are the main influencing factors of roof-contacted filling in this mine.